Jacket



May 20, 1941. R. J. YHINES ETAL JACKET Filed May 12, 1959 INVENTORS. J. HINES and RUSSELL DAVID A. COLLINGS ATTORNEY.

Patented May 20, 1941 JACKET Russell J. Hines, Lakewood, and David A. Collings,

Cleveland, Ohio, assignors, by mesne assignments, to Hazel K. Hines, Lakewood, Ohio Application May 12, 1939, Serial No. 273,260

2 Claims.

This invention relates to the construction of mold jackets, and aims to make a jacket which can be adjusted for size by spacing the walls apart at the corners, but without loss of firmness at the corner joint, the principal purpose of such adjustment being to cause the jacket to seat at a higher or lower position on the sand mold.

To this end the invention includes a novel corner construction by which the Walls are joined at their successive ends with the use of spacing devices which may be of various sizes for the same flask, selection of size being dependent upon the way in which the flask is intended to operate, as will appear from the detailed description which follows. The invention includes the use of the spacing devices as keys to prevent relative movement of adjacent parts.

1 Further details and particulars of the invention will disclose its purposes and advantages more completely. It will be understood that the accompanying drawing and the descriptive matter following are illustrative of a preferred method and embodiment and are not to be taken as limitations.

In the accompanying drawing Fig. 1 is a perspective of a completed mold jacket made according to the principles of our invention;

Figs. 2 and 3 are enlarged plans of a modified corner, particularly illustrating size adjustment;

Figs. 4 and 5 are interior elevations of a jacket wall, wherein Fig. 4 illustrates the modification shown in Figs. 2 and 3, while Fig. 5 corresponds to Fig. 1;

Fig. 6 is a section on plane 66 of Fig. 1, illustrating the construction shown in Fig. 5; and

Fig. 7 illustrates the application of a jacket to a sand mold, showing the effect of the size adjustment.

Referring now particularly to Fig. 1, our mold jacket comprises walls I, I, 2, 2 which are brought together to size with keys 8 in key-ways 9 at the corners, using suitable corner fastenings such as bolts 1. The key-ways and keys are preferably transverse, but may be upright. In some instances it will be found advantageous to extend the key-ways and keys both transversely and longitudinally, or upright.

The wall ends are preferably formed at angles of 45, and may be made in anysuitable way, as by casting with the key-ways therein, machining, or otherwise. The key-ways are preferably V- channels with sides at 90, and the keys preferably square bar stock of standard size, cut to appropriate length, although it is apparent that the invention is not dependent upon the shapes of keys and key-ways. It will be apparent that other bar keys, the cross-section of which is a regular polygon having an even number of sides, may be used where corresponding provision is made for complemental and symmetrical keyways with plane sides for receiving opposite corners of said keys.

The length and width of the jacket can be varied by using various sizes of keys in the keyways when assembling the jacket; two sizes of upright keys 4 and 4' are s'hownto illustrate the point, and obviously if transverse keys 8 are also used they will be used in the same manner. Thus by varying the key size the jacket will fit higher or lower on a .pair of molds from the same flasks; for instance if the greater part of the casting is in the cope C, Fig. -7, the jacket J will be set up with small keys 4 so as to ride high (solid lines), but if the principal weight of the metal, and consequent bursting strain while pouring, is in the drag D, large keys 4' will be used and the jacket will go lower, as illustrated by the dotted line position J. To prevent the downward movement of the jacket from being stopped by diagonal corner edges 3| these edges are relieved or setback as at 32. Since the inclination of the mold sides is slight, usually about 4", no great depth of relief is necessary at 32.

Although our invention is illustrated as applied to a jacket having walls of externally h-oney-combed construction, this showing is because the drawing was made from a commercial jacket now being manufactured. The invention is applicable to jackets without regard to the details of the wall construction.

Certain practical and preferred embodiments of our invention having been described, reference is made to the claims for definition of itsscope.

We claim:

1. A mold jacket comprising, in combination, a plurality of side walls arranged to define corners at their adjacent ends, the ends of said walls being formed to provide opposed faces, and said faces having opposed, symmetrical key-ways of plane-sided channel shape formed therein; bar keys, the cross-section of which is a regular polygon having an even number of sides, having opposite corners complementally fitting said keyways and spacing the opposed faces of adjacent ends of said walls; and means for holding the side walls together at the corners.

2. In a mold jacket, the combination comprising a plurality of side walls arranged to define corners at their adjacent ends, the ends of said walls being formed to provide opposed faces, said mentally fitting said key-ways and spacing the faces having key-ways formed therein, and said opposed faces of adjacent ends of said walls;

key-ways being in the form of right-angle, V- and means for clamping each corner together grooves extending both longitudinally and trans? to bind said keys in said key-ways. versely in the respective faces; bar keys of square 5 RUSSELL J. HINES.

cross-section having opposite corners comple- DAVID A. COLLINGS. 

